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3 years ago

What is the answer for - 18 = 8x

Mathematics

1 answer:

Aleksandr-060686 [28]3 years ago

8 0

$-18= 8x \\ x = \frac{-18}{8} = \frac{-9\times 2}{4 \times 2} =\boxed { \frac{-9}{4}= -2.25}$

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n HP laser printer is advertised to print text documents at a speed of 18 ppm (pages per minute). The manufacturer tells you tha

Dominik [7]

Answer:

0.321 is the probability that their mean printing speed of the sample is greater than 17.99 ppm.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 17.39 ppm

Standard Deviation, σ = 4.25 ppm

Sample size = 11

We are given that the distribution of printing speed is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\frac{\sigma}{\sqrt{n}}}$

P(printing speed of the sample is greater than 17.99 ppm.)

P(x > 17.99)

$P( x > 17.99) = P( z > \displaystyle\frac{17.99-17.39}{\frac{4.25}{\sqrt{11}}}) = P(z > 0.468229)\\\\P( z > 0.468229) = 1 - P(z < 0.468229)$

Calculating the value from the standard normal table we have,

$1 - 0.679 = 0321= 32.1\%\\P( x > 17.99) = 32.1\%$

Thus, 0.321 is the probability that their mean printing speed of the sample is greater than 17.99 ppm.

8 0

3 years ago

Help meee asap!!!!!!!!!!!!!!!!!!!!!!!

forsale [732]

Answer: see attachments

Step-by-step explanation:

Slope-Intercept format is: y = mx + b

↓ ↓

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3 0

3 years ago

Two less than the product of 9 and a number is equal to 4.

Llana [10]

Answer:

See, that doesn't make sense.

First of all, 4 is the only number equal to 4. Sp, it'd be 9+4 = 13

Then I'm assuming you're also subtracting 4 from 13, so the answer would be 9.

Hope this helped, have a nice day.

7 0

2 years ago

Name the property the equation illustrates. (ab)3 = a(b3)

Tju [1.3M]

The property that illustrates (ab)3 = a(b3) is
ASSOCIATIVE PROPERTY OF MULTIPLICATION

6 0

3 years ago

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True or false The solution set of 2x+5=x-3is {-8}

irinina [24]

Answer:

True

Step-by-step explanation:

2x+5=x-3 is (-8)

This is the correct answer

3 0

3 years ago

Read 2 more answers